From 9d883c6db8a30ddd2928890bf2011ed4eb738b4f Mon Sep 17 00:00:00 2001
From: Лач <iam@lach.pw>
Date: Mon, 20 Jul 2020 23:39:18 +0000
Subject: [PATCH] perf: faster range


---
--- a/crates/jrsonnet-evaluator/build.rs
+++ b/crates/jrsonnet-evaluator/build.rs
@@ -39,7 +39,7 @@
 								if **name == *"join" || **name == *"manifestJsonEx" ||
 								**name == *"escapeStringJson" || **name == *"equals" ||
 								**name == *"base64" || **name == *"foldl" || **name == *"foldr" ||
-								**name == *"sortImpl"
+								**name == *"sortImpl" || **name == *"range"
 							)
 						})
 						.collect(),
--- a/crates/jrsonnet-evaluator/src/evaluate.rs
+++ b/crates/jrsonnet-evaluator/src/evaluate.rs
@@ -633,6 +633,17 @@
 				}
 				Ok(Val::Arr(Rc::new(new_arr)))
 			}))?,
+			// faster
+			("std", "range") => parse_args!(context, "std.range", args, 2, [
+				0, from: [Val::Num]!!Val::Num, vec![ValType::Num];
+				0, to: [Val::Num]!!Val::Num, vec![ValType::Num];
+			], {
+				let mut out = Vec::with_capacity((1+to as usize-from as usize).max(0));
+				for i in from as usize..=to as usize {
+					out.push(Val::Num(i as f64));
+				}
+				Val::Arr(Rc::new(out))
+			}),
 			("std", "char") => parse_args!(context, "std.char", args, 1, [
 				0, n: [Val::Num]!!Val::Num, vec![ValType::Num];
 			], {

-- 
gitstuff